forked from FoundKeyGang/FoundKey
client: refactor pagination.vue
This mostly involves deduplicating code and removing redudndant statements. Also translated all but one comment to English.
This commit is contained in:
parent
2aafe8fc9f
commit
4bfbe0dd96
GPG Key ID:
9EE6577A2A06F8F1
|
|
@ -15,14 +15,14 @@
|
|||
|
||||
<div v-else ref="rootEl">
|
||||
<div v-show="pagination.reversed && more" key="_more_" class="cxiknjgy _gap">
|
||||
<MkButton v-if="!moreFetching" class="button" :disabled="moreFetching" :style="{ cursor: moreFetching ? 'wait' : 'pointer' }" primary @click="fetchMoreAhead">
|
||||
<MkButton v-if="!moreFetching" class="button" :disabled="moreFetching" :style="{ cursor: moreFetching ? 'wait' : 'pointer' }" primary @click="fetchMore(true)">
|
||||
{{ i18n.ts.loadMore }}
|
||||
</MkButton>
|
||||
<MkLoading v-else class="loading"/>
|
||||
</div>
|
||||
<slot :items="items"></slot>
|
||||
<div v-show="!pagination.reversed && more" key="_more_" class="cxiknjgy _gap">
|
||||
<MkButton v-if="!moreFetching" v-appear="($store.state.enableInfiniteScroll && !disableAutoLoad) ? fetchMore : null" class="button" :disabled="moreFetching" :style="{ cursor: moreFetching ? 'wait' : 'pointer' }" primary @click="fetchMore">
|
||||
<MkButton v-if="!moreFetching" v-appear="($store.state.enableInfiniteScroll && !disableAutoLoad) ? fetchMore : null" class="button" :disabled="moreFetching" :style="{ cursor: moreFetching ? 'wait' : 'pointer' }" primary @click="fetchMore()">
|
||||
{{ i18n.ts.loadMore }}
|
||||
</MkButton>
|
||||
<MkLoading v-else class="loading"/>
|
||||
|
|
@ -32,7 +32,7 @@
|
|||
</template>
|
||||
|
||||
<script lang="ts" setup>
|
||||
import { computed, ComputedRef, isRef, onActivated, onDeactivated, ref, watch } from 'vue';
|
||||
import { ComputedRef, isRef, onActivated, onDeactivated, watch } from 'vue';
|
||||
import * as foundkey from 'foundkey-js';
|
||||
import * as os from '@/os';
|
||||
import { onScrollTop, isTopVisible, getScrollPosition, getScrollContainer } from '@/scripts/scroll';
|
||||
|
|
@ -45,13 +45,13 @@ export type Paging<E extends keyof foundkey.Endpoints = keyof foundkey.Endpoints
|
|||
params?: foundkey.Endpoints[E]['req'] | ComputedRef<foundkey.Endpoints[E]['req']>;
|
||||
|
||||
/**
|
||||
* 検索APIのような、ページング不可なエンドポイントを利用する場合
|
||||
* (そのようなAPIをこの関数で使うのは若干矛盾してるけど)
|
||||
* When using non-pageable endpoints, such as the search API.
|
||||
* (though it is slightly inconsistent to use such an API with this function)
|
||||
*/
|
||||
noPaging?: boolean;
|
||||
|
||||
/**
|
||||
* items 配列の中身を逆順にする(新しい方が最後)
|
||||
* items Array contents in reverse order (newest first, last)
|
||||
*/
|
||||
reversed?: boolean;
|
||||
|
||||
|
|
@ -76,202 +76,175 @@ const emit = defineEmits<{
|
|||
|
||||
type Item = { id: string; [another: string]: unknown; };
|
||||
|
||||
const rootEl = ref<HTMLElement>();
|
||||
const items = ref<Item[]>([]);
|
||||
const queue = ref<Item[]>([]);
|
||||
const offset = ref(0);
|
||||
const fetching = ref(true);
|
||||
const moreFetching = ref(false);
|
||||
const more = ref(false);
|
||||
const backed = ref(false); // 遡り中か否か
|
||||
const isBackTop = ref(false);
|
||||
const empty = computed(() => items.value.length === 0);
|
||||
const error = ref(false);
|
||||
let rootEl: HTMLElement | null = $ref(null);
|
||||
let items: Item[] = $ref([]);
|
||||
let queue: Item[] = $ref([]);
|
||||
let offset: number = $ref(0);
|
||||
let fetching: boolean = $ref(true);
|
||||
let moreFetching: boolean = $ref(false);
|
||||
let more: boolean = $ref(false);
|
||||
let backed: boolean = $ref(false); // 遡り中か否か
|
||||
let isBackTop: boolean = $ref(false);
|
||||
const empty = $computed(() => items.length === 0);
|
||||
let error: boolean = $ref(false);
|
||||
|
||||
const init = async (): Promise<void> => {
|
||||
queue.value = [];
|
||||
fetching.value = true;
|
||||
const params = props.pagination.params ? isRef(props.pagination.params) ? props.pagination.params.value : props.pagination.params : {};
|
||||
queue = [];
|
||||
fetching = true;
|
||||
const params = props.pagination.params
|
||||
? isRef(props.pagination.params)
|
||||
? props.pagination.params.value as Record<string, any>
|
||||
: props.pagination.params
|
||||
: {};
|
||||
await os.api(props.pagination.endpoint, {
|
||||
...params,
|
||||
limit: props.pagination.noPaging ? (props.pagination.limit || 10) : (props.pagination.limit || 10) + 1,
|
||||
}).then(res => {
|
||||
}).then((res: Item[]) => {
|
||||
if (!props.pagination.noPaging && (res.length > (props.pagination.limit || 10))) {
|
||||
res.pop();
|
||||
items.value = props.pagination.reversed ? [...res].reverse() : res;
|
||||
more.value = true;
|
||||
more = true;
|
||||
} else {
|
||||
items.value = props.pagination.reversed ? [...res].reverse() : res;
|
||||
more.value = false;
|
||||
more = false;
|
||||
}
|
||||
offset.value = res.length;
|
||||
error.value = false;
|
||||
fetching.value = false;
|
||||
items = props.pagination.reversed ? [...res].reverse() : res;
|
||||
offset = res.length;
|
||||
error = false;
|
||||
fetching = false;
|
||||
emit('loaded');
|
||||
}, () => {
|
||||
error.value = true;
|
||||
fetching.value = false;
|
||||
}).catch(() => {
|
||||
error = true;
|
||||
fetching = false;
|
||||
emit('error');
|
||||
});
|
||||
};
|
||||
|
||||
const reload = (): void => {
|
||||
items.value = [];
|
||||
items = [];
|
||||
init();
|
||||
};
|
||||
|
||||
const fetchMore = async (): Promise<void> => {
|
||||
if (!more.value || fetching.value || moreFetching.value || items.value.length === 0) return;
|
||||
moreFetching.value = true;
|
||||
backed.value = true;
|
||||
const params = props.pagination.params ? isRef(props.pagination.params) ? props.pagination.params.value : props.pagination.params : {};
|
||||
const fetchMore = async (ahead?: boolean): Promise<void> => {
|
||||
if (!more || fetching || moreFetching || items.length === 0) return;
|
||||
moreFetching = true;
|
||||
if (!ahead) {
|
||||
backed = true;
|
||||
}
|
||||
const params = props.pagination.params ? isRef(props.pagination.params) ? props.pagination.params : props.pagination.params : {};
|
||||
await os.api(props.pagination.endpoint, {
|
||||
...params,
|
||||
limit: SECOND_FETCH_LIMIT + 1,
|
||||
...(props.pagination.offsetMode ? {
|
||||
offset: offset.value,
|
||||
} : props.pagination.reversed ? {
|
||||
sinceId: items.value[0].id,
|
||||
} : {
|
||||
untilId: items.value[items.value.length - 1].id,
|
||||
}),
|
||||
offset,
|
||||
} : ahead ? (
|
||||
props.pagination.reversed ? {
|
||||
untilId: items[0].id,
|
||||
} : {
|
||||
sinceId: items[items.length - 1].id,
|
||||
}
|
||||
) : (
|
||||
props.pagination.reversed ? {
|
||||
sinceId: items[0].id,
|
||||
} : {
|
||||
untilId: items[items.length - 1].id,
|
||||
}
|
||||
)),
|
||||
}).then(res => {
|
||||
if (res.length > SECOND_FETCH_LIMIT) {
|
||||
res.pop();
|
||||
items.value = props.pagination.reversed ? [...res].reverse().concat(items.value) : items.value.concat(res);
|
||||
more.value = true;
|
||||
more = true;
|
||||
} else {
|
||||
items.value = props.pagination.reversed ? [...res].reverse().concat(items.value) : items.value.concat(res);
|
||||
more.value = false;
|
||||
more = false;
|
||||
}
|
||||
offset.value += res.length;
|
||||
moreFetching.value = false;
|
||||
items = props.pagination.reversed ? [...res].reverse().concat(items) : items.concat(res);
|
||||
offset += res.length;
|
||||
moreFetching = false;
|
||||
}, () => {
|
||||
moreFetching.value = false;
|
||||
});
|
||||
};
|
||||
|
||||
const fetchMoreAhead = async (): Promise<void> => {
|
||||
if (!more.value || fetching.value || moreFetching.value || items.value.length === 0) return;
|
||||
moreFetching.value = true;
|
||||
const params = props.pagination.params ? isRef(props.pagination.params) ? props.pagination.params.value : props.pagination.params : {};
|
||||
await os.api(props.pagination.endpoint, {
|
||||
...params,
|
||||
limit: SECOND_FETCH_LIMIT + 1,
|
||||
...(props.pagination.offsetMode ? {
|
||||
offset: offset.value,
|
||||
} : props.pagination.reversed ? {
|
||||
untilId: items.value[0].id,
|
||||
} : {
|
||||
sinceId: items.value[items.value.length - 1].id,
|
||||
}),
|
||||
}).then(res => {
|
||||
if (res.length > SECOND_FETCH_LIMIT) {
|
||||
res.pop();
|
||||
items.value = props.pagination.reversed ? [...res].reverse().concat(items.value) : items.value.concat(res);
|
||||
more.value = true;
|
||||
} else {
|
||||
items.value = props.pagination.reversed ? [...res].reverse().concat(items.value) : items.value.concat(res);
|
||||
more.value = false;
|
||||
}
|
||||
offset.value += res.length;
|
||||
moreFetching.value = false;
|
||||
}, () => {
|
||||
moreFetching.value = false;
|
||||
moreFetching = false;
|
||||
});
|
||||
};
|
||||
|
||||
const prepend = (item: Item): void => {
|
||||
if (props.pagination.reversed) {
|
||||
if (rootEl.value) {
|
||||
const container = getScrollContainer(rootEl.value);
|
||||
if (rootEl) {
|
||||
const container = getScrollContainer(rootEl);
|
||||
if (container == null) {
|
||||
// TODO?
|
||||
} else {
|
||||
const pos = getScrollPosition(rootEl.value);
|
||||
const pos = getScrollPosition(rootEl);
|
||||
const viewHeight = container.clientHeight;
|
||||
const height = container.scrollHeight;
|
||||
const isBottom = (pos + viewHeight > height - 32);
|
||||
// Discard old items if they overflow.
|
||||
if (isBottom) {
|
||||
// オーバーフローしたら古いアイテムは捨てる
|
||||
if (items.value.length >= props.displayLimit) {
|
||||
// このやり方だとVue 3.2以降アニメーションが動かなくなる
|
||||
//items.value = items.value.slice(-props.displayLimit);
|
||||
while (items.value.length >= props.displayLimit) {
|
||||
items.value.shift();
|
||||
}
|
||||
more.value = true;
|
||||
while (items.length >= props.displayLimit) {
|
||||
items.shift();
|
||||
}
|
||||
more = true;
|
||||
}
|
||||
}
|
||||
}
|
||||
items.value.push(item);
|
||||
items.push(item);
|
||||
// TODO
|
||||
} else {
|
||||
// 初回表示時はunshiftだけでOK
|
||||
if (!rootEl.value) {
|
||||
items.value.unshift(item);
|
||||
// Only unshift is required for initial display.
|
||||
if (!rootEl) {
|
||||
items.unshift(item);
|
||||
return;
|
||||
}
|
||||
|
||||
const isTop = isBackTop.value || (document.body.contains(rootEl.value) && isTopVisible(rootEl.value));
|
||||
const isTop = isBackTop || (document.body.contains(rootEl) && isTopVisible(rootEl));
|
||||
|
||||
if (isTop) {
|
||||
// Prepend the item
|
||||
items.value.unshift(item);
|
||||
items.unshift(item);
|
||||
|
||||
// オーバーフローしたら古いアイテムは捨てる
|
||||
if (items.value.length >= props.displayLimit) {
|
||||
// このやり方だとVue 3.2以降アニメーションが動かなくなる
|
||||
//this.items = items.value.slice(0, props.displayLimit);
|
||||
while (items.value.length >= props.displayLimit) {
|
||||
items.value.pop();
|
||||
}
|
||||
more.value = true;
|
||||
// Discard old items if they overflow.
|
||||
while (items.length >= props.displayLimit) {
|
||||
items.pop();
|
||||
}
|
||||
more = true;
|
||||
} else {
|
||||
queue.value.push(item);
|
||||
onScrollTop(rootEl.value, () => {
|
||||
for (const queueItem of queue.value) {
|
||||
queue.push(item);
|
||||
onScrollTop(rootEl, () => {
|
||||
for (const queueItem of queue) {
|
||||
prepend(queueItem);
|
||||
}
|
||||
queue.value = [];
|
||||
queue = [];
|
||||
});
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
const append = (item: Item): void => {
|
||||
items.value.push(item);
|
||||
items.push(item);
|
||||
};
|
||||
|
||||
const removeItem = (finder: (item: Item) => boolean): void => {
|
||||
const i = items.value.findIndex(finder);
|
||||
items.value.splice(i, 1);
|
||||
const i = items.findIndex(finder);
|
||||
items.splice(i, 1);
|
||||
};
|
||||
|
||||
const updateItem = (id: Item['id'], replacer: (old: Item) => Item): void => {
|
||||
const i = items.value.findIndex(item => item.id === id);
|
||||
items.value[i] = replacer(items.value[i]);
|
||||
const i = items.findIndex(item => item.id === id);
|
||||
items[i] = replacer(items[i]);
|
||||
};
|
||||
|
||||
if (props.pagination.params && isRef(props.pagination.params)) {
|
||||
watch(props.pagination.params, init, { deep: true });
|
||||
}
|
||||
|
||||
watch(queue, (a, b) => {
|
||||
if (a.length === 0 && b.length === 0) return;
|
||||
emit('queue', queue.value.length);
|
||||
watch($$(queue), (a, b) => {
|
||||
if (a.length !== 0 || b.length !== 0) emit('queue', queue.length);
|
||||
}, { deep: true });
|
||||
|
||||
init();
|
||||
|
||||
onActivated(() => {
|
||||
isBackTop.value = false;
|
||||
isBackTop = false;
|
||||
});
|
||||
|
||||
onDeactivated(() => {
|
||||
isBackTop.value = window.scrollY === 0;
|
||||
isBackTop = window.scrollY === 0;
|
||||
});
|
||||
|
||||
defineExpose({
|
||||
|
|
|
|||
Loading…
Reference in New Issue